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Choose the correct answer:
A normal woman whose father was colorblind marries a colorblind man. How many of them would suffer if they had two sons and two daughters?

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Both son and both daughters

Both sons

One son and one daughter

Both daughters

answer is B.

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Detailed Solution

An X-linked recessive condition is colour blindness. In order for the colorblind father to carry the impacted X chromosome to the daughter, the father passes its X chromosome to the daughter.

As a result, the colorblind man's genotype will be (XY) while that of the carrier female will be (XX).

The condition will manifest in one son and one daughter of a carrier female who marries a colorblind guy.

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